\section{Introduction}
Nowadays everybody knows the meaning of ``Take-away'' service (called ``Take-out'' in U.S.A.) as a food purchased at a restaurant or fast-food 
for the purpose of beign eaten elsewhere.

In some cases, who offers a service of this kind wants to promote it to the customers in different ways such as advertisements or internet, so 
a customer can book or order foods by telephone, fax or Web.

In the last year the smartphone market grew up more than doubled of the overall mobile phone market (56.7\%)
\footnote{IDC Press Release, 2010 May 7th - http://www.idc.com/getdoc.jsp?containerId=prUS22333410}.

As says Ramon Llamas, senior research analyst with IDC’s Mobile Devices Technology and Trends team:
\begin{quote}
\emph{``2010 looks to be another year of large-scale consumer adoption of converged mobile devices. Consumers will gravitate to smartphones not 
just because the devices themselves look ``cool'' and ``slick'', but because the overall experience aligns with their individual tastes and 
demands. Users are seeking – and finding – experiences that are intuitive, seamless, and fun. Already, we've seen what Palm's webOS and Google's 
Android can do. This year, we expect updates for BlackBerry, Symbian, and Windows Mobile to spark greater smartphone demand with their offerings.''}
\end{quote}

For the reasons above we could thing that smartphones will become (or already becomes?) part of our life, and we easly can do everything with 
by using them: call, browse the net, receive and send email, manage our contacts and whatelse you want (ideally)...also order foods in a 
take-away service.

Therefore, we could assume that somewhere there is a restaurant or a fast-food that offers a take-away service to its customers through a wireless connection.

The basic idea is that a customer (client) who wants to get a meal without call a manservant, can do that by ``calling'' directly 
the kitchen or the cook (server). 

An example could be this: I want to order a fast meal for my family without going into the restaurant but simply do it from my car parking
outside (such as McDonald's McDrive service).

The application should realize the pricipal features of a situation like that nearly explain.

The scenario introduced can be realized in an infrastructure WLAN as shown in Fig. \ref{fig:network}. We can assume that the access point is in a 
position such that it covers as well as possible the whole area around the building. In this case all customers coming to the restaurant (fast-food) 
can receive the same (good) signal necessary to get the service.

\begin{figure}[h]
 \centering
 \includegraphics[width=0.3\textwidth]{img/wfta_net.jpg}
 \caption{Example of WiFi Take away network}
 \label{fig:network}
\end{figure}
